{"id":25112,"date":"2026-09-30T12:12:20","date_gmt":"2026-09-30T12:12:20","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=25112"},"modified":"2026-09-30T12:12:20","modified_gmt":"2026-09-30T12:12:20","slug":"juniper-jn0-336-practice-test-questions-and-exam-dumps-part7-q121-140","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/juniper-jn0-336-practice-test-questions-and-exam-dumps-part7-q121-140\/","title":{"rendered":"Juniper JN0-336 Practice Test Questions and Exam Dumps Part7 Q121-140"},"content":{"rendered":"

View Full <\/b>Juniper JN0-336 Exam Dumps<\/b><\/a> and Practice Test Dumps<\/b><\/h2>\n

 <\/p>\n

Question 121.<\/b><\/h3>\n

Which setting determines when a security policy operates?<\/b><\/p>\n

    \n
  1. Policy schedule<\/span><\/li>\n
  2. Attack database<\/span><\/li>\n
  3. Tunnel interface<\/span><\/li>\n
  4. Address translation<\/span><\/li>\n<\/ol>\n

    Correct Answer: 1<\/b><\/p>\n

    Explanation:<\/b><\/p>\n

    A policy schedule determines the periods during which a security policy is active. This allows administrators to apply different access controls according to specific times, such as business hours, maintenance windows, or temporary access periods. The schedule is associated with the policy and controls when its matching and enforcement behavior is available. An attack database supports intrusion detection, a tunnel interface provides VPN connectivity, and address translation modifies packet addressing. Scheduling policies can therefore help organizations implement time-based security requirements without repeatedly changing the underlying policy configuration.<\/span><\/p>\n

    Question 122.<\/b><\/h3>\n

    Which screen feature helps protect against IP spoofing?<\/b><\/p>\n

      \n
    1. SYN protection<\/span><\/li>\n
    2. IP spoofing check<\/span><\/li>\n
    3. Port scanning<\/span><\/li>\n
    4. Session logging<\/span><\/li>\n<\/ol>\n

      Correct Answer: 2<\/b><\/p>\n

      Explanation:<\/b><\/p>\n

      An IP spoofing check helps identify traffic using source addresses that are inconsistent with the expected network topology or configured security assumptions. Spoofed source addresses can be used to disguise the origin of malicious traffic and may support attacks against internal systems. Security screens can apply checks designed to detect and restrict suspicious traffic patterns before they reach protected resources. SYN protection addresses connection-flood behavior, port scanning concerns reconnaissance activity, and session logging records connection information. Spoofing protection therefore focuses specifically on validating whether source-address behavior is legitimate for the traffic path.<\/span><\/p>\n

      Question 123.<\/b><\/h3>\n

      Which screen mechanism detects abnormal ICMP behavior?<\/b><\/p>\n

        \n
      1. TCP sequence checking<\/span><\/li>\n
      2. SYN checking<\/span><\/li>\n
      3. ICMP flood protection<\/span><\/li>\n
      4. Fragment reassembly<\/span><\/li>\n<\/ol>\n

        Correct Answer: 3<\/b><\/p>\n

        Explanation:<\/b><\/p>\n

        ICMP flood protection detects excessive ICMP traffic that may consume firewall or network resources. Attackers can generate large volumes of ICMP packets to exhaust processing capacity or degrade network availability. A security screen can apply thresholds or protective behavior to reduce the impact of such traffic. TCP sequence checking validates characteristics of TCP packets, SYN checking focuses on connection-establishment behavior, and fragment reassembly deals with fragmented packets. ICMP flood protection is therefore specifically associated with controlling abnormal volumes of ICMP traffic and is useful when protecting network resources from packet-rate-based abuse.<\/span><\/p>\n

        Question 124.<\/b><\/h3>\n

        What can enforce maximum packet-per-second traffic rates?<\/b><\/p>\n

          \n
        1. Application signature<\/span><\/li>\n
        2. Security zone<\/span><\/li>\n
        3. Route preference<\/span><\/li>\n
        4. Traffic policer<\/span><\/li>\n<\/ol>\n

          Correct Answer: 4<\/b><\/p>\n

          Explanation:<\/b><\/p>\n

          A traffic policer can enforce a configured traffic rate by monitoring traffic volume and applying an action when the permitted rate is exceeded. Policing is commonly used to control bandwidth consumption and prevent particular traffic classes from overwhelming available resources. An application signature identifies application traffic, a security zone defines a trust boundary, and route preference influences route selection. A policer therefore provides a rate-control mechanism rather than classification or routing. Administrators can use policing to establish predictable traffic limits and protect network capacity when specific flows require controlled resource consumption.<\/span><\/p>\n

          Question 125.<\/b><\/h3>\n

          Which object groups addresses for policy matching?<\/b><\/p>\n

            \n
          1. Address set<\/span><\/li>\n
          2. Service timeout<\/span><\/li>\n
          3. VPN proposal<\/span><\/li>\n
          4. Attack signature<\/span><\/li>\n<\/ol>\n

            Correct Answer: 1<\/b><\/p>\n

            Explanation:<\/b><\/p>\n

            An address set groups multiple address objects into a logical collection that can be referenced by security policies and other configuration elements. Instead of repeatedly listing individual addresses, administrators can create an address set and use it as a policy match condition. This simplifies configuration and makes policy management easier when several hosts or networks require identical treatment. Service timeouts govern connection behavior, VPN proposals define cryptographic parameters, and attack signatures identify suspicious traffic patterns. Address sets therefore provide an organizational mechanism for efficiently applying consistent policy rules to multiple network destinations or sources.<\/span><\/p>\n

            Question 126.<\/b><\/h3>\n

            Which application control can restrict selected application traffic?<\/b><\/p>\n

              \n
            1. Route filter<\/span><\/li>\n
            2. Application firewall<\/span><\/li>\n
            3. ARP cache<\/span><\/li>\n
            4. VPN monitor<\/span><\/li>\n<\/ol>\n

              Correct Answer: 2<\/b><\/p>\n

              Explanation:<\/b><\/p>\n

              An application firewall can use identified application information as part of security enforcement, allowing administrators to control selected applications independently of simple port-based rules. This provides more granular control when different applications share ports or use dynamic communication behavior. Route filters determine routing information, ARP caches maintain Layer 2 neighbor mappings, and VPN monitors provide visibility into tunnel availability. Application-aware enforcement can therefore improve security policy precision by allowing administrators to permit, deny, or otherwise control traffic based on the application identified by the SRX device.<\/span><\/p>\n

              Question 127.<\/b><\/h3>\n

              Which security policy element can match a destination zone?<\/b><\/p>\n

                \n
              1. Source address<\/span><\/li>\n
              2. Application<\/span><\/li>\n
              3. Destination zone<\/span><\/li>\n
              4. Source identity<\/span><\/li>\n<\/ol>\n

                Correct Answer: 3<\/b><\/p>\n

                Explanation:<\/b><\/p>\n

                The destination zone identifies the security zone toward which traffic is traveling and forms an important part of SRX security-policy evaluation. Policies are commonly structured around traffic moving from a source zone to a destination zone, with additional criteria narrowing the match. Source addresses identify originating endpoints, application matching identifies traffic characteristics, and source identity provides user-related information where identity services are configured. Correct destination-zone selection ensures that the policy applies to the intended trust boundary and prevents administrators from accidentally permitting or denying traffic in an unrelated security-zone path.<\/span><\/p>\n

                Question 128.<\/b><\/h3>\n

                What can preserve translated addresses for a specific client-server relationship?<\/b><\/p>\n

                  \n
                1. Dynamic routing<\/span><\/li>\n
                2. Persistent NAT mapping<\/span><\/li>\n
                3. IDP inspection<\/span><\/li>\n
                4. DNS forwarding<\/span><\/li>\n<\/ol>\n

                  Correct Answer: 4<\/b><\/p>\n

                  Explanation:<\/b><\/p>\n

                  Persistent NAT mapping can maintain a predictable translation relationship for traffic associated with a particular connection context or endpoint, depending on the configured persistence behavior. This can be important for applications that expect repeated communication to use a consistent translated identity. Dynamic routing determines forwarding paths, IDP inspection analyzes traffic for attack patterns, and DNS forwarding handles name-resolution requests. Persistent translation is therefore useful when ordinary dynamic NAT behavior does not provide the consistency required by an application. Administrators should select the persistence behavior according to application requirements and the intended NAT design.<\/span><\/p>\n

                  Question 129.<\/b><\/h3>\n

                  Which NAT mechanism translates a destination address to an internal server?<\/b><\/p>\n

                    \n
                  1. Destination NAT<\/span><\/li>\n
                  2. Source filtering<\/span><\/li>\n
                  3. Application tracking<\/span><\/li>\n
                  4. Route monitoring<\/span><\/li>\n<\/ol>\n

                    Correct Answer: 3<\/b><\/p>\n

                    Explanation:<\/b><\/p>\n

                    Destination NAT translates the destination address of incoming traffic so that a publicly reachable address can correspond to an internal server or service. This is commonly used when external clients need access to resources located behind an SRX device. The NAT rule determines which traffic matches and what destination translation should occur. Source filtering controls traffic based on originating information, application tracking provides visibility into application usage, and route monitoring checks network reachability. Destination NAT therefore plays a key role in publishing internal services through translated addresses while allowing security policies to control the resulting traffic.<\/span><\/p>\n

                    Question 130.<\/b><\/h3>\n

                    Which rule-set property can identify traffic by source zone?<\/b><\/p>\n

                      \n
                    1. Security screen<\/span><\/li>\n
                    2. Source interface<\/span><\/li>\n
                    3. Source zone<\/span><\/li>\n
                    4. VPN identifier<\/span><\/li>\n<\/ol>\n

                      Correct Answer: 4<\/b><\/p>\n

                      Explanation:<\/b><\/p>\n

                      The source zone identifies the security context from which traffic originates and can be used as a matching characteristic in relevant firewall and NAT configuration. Security zones allow administrators to organize interfaces according to trust boundaries and then apply controls between those zones. A security screen provides attack-protection checks, a source interface identifies a specific interface, and a VPN identifier relates to tunnel configuration. Source-zone matching is particularly useful when the same address or service appears in different security contexts and administrators need policies or translation rules to behave differently according to the originating zone.<\/span><\/p>\n

                      Question 131.<\/b><\/h3>\n

                      Which feature provides centralized configuration management for SRX devices?<\/b><\/p>\n

                        \n
                      1. Security Director<\/span><\/li>\n
                      2. Flow trace<\/span><\/li>\n
                      3. RPM probe<\/span><\/li>\n
                      4. Session counter<\/span><\/li>\n<\/ol>\n

                        Correct Answer: 1<\/b><\/p>\n

                        Explanation:<\/b><\/p>\n

                        Security Director provides centralized management capabilities for security policies and related configuration across supported Juniper security devices. Centralized management can simplify administration by allowing security teams to create, organize, review, and deploy policies from a common management platform. Flow trace is a troubleshooting mechanism, RPM probes monitor network performance or reachability, and session counters provide operational statistics. Centralized management is especially useful in environments with multiple SRX devices because administrators can manage policy changes consistently rather than maintaining every device independently through separate local configuration sessions.<\/span><\/p>\n

                        Question 132.<\/b><\/h3>\n

                        What can confirm a candidate configuration is syntactically valid?<\/b><\/p>\n

                          \n
                        1. Policy counter<\/span><\/li>\n
                        2. Commit check<\/span><\/li>\n
                        3. Traffic shaper<\/span><\/li>\n
                        4. Session table<\/span><\/li>\n<\/ol>\n

                          Correct Answer: 2<\/b><\/p>\n

                          Explanation:<\/b><\/p>\n

                          A commit check validates the candidate Junos configuration without activating it as the current configuration. This allows administrators to identify syntax or configuration-structure problems before committing changes to the running system. It is particularly useful when making complex modifications involving security policies, VPNs, routing, interfaces, or services. Policy counters provide traffic statistics, traffic shapers control bandwidth behavior, and session tables show active connection information. Performing a commit check before committing substantial changes provides an additional safeguard and can reduce the risk of introducing configuration errors into an operational SRX device.<\/span><\/p>\n

                          Question 133.<\/b><\/h3>\n

                          Which UTM service examines unwanted email?<\/b><\/p>\n

                            \n
                          1. Web filtering<\/span><\/li>\n
                          2. Antivirus<\/span><\/li>\n
                          3. Antispam<\/span><\/li>\n
                          4. Application identification<\/span><\/li>\n<\/ol>\n

                            Correct Answer: 4<\/b><\/p>\n

                            Explanation:<\/b><\/p>\n

                            Antispam examines email traffic for characteristics associated with unwanted or suspicious messages. Depending on the configured security services and available inspection capabilities, antispam can use information such as sender reputation, message characteristics, and other indicators to classify email. Web filtering focuses on web destinations, antivirus examines files for malicious content, and application identification determines the application associated with network traffic. Antispam therefore provides a specialized email-security function. Properly configured antispam controls can help reduce unwanted messages reaching users while allowing legitimate email traffic to continue through the security infrastructure.<\/span><\/p>\n

                            Question 134.<\/b><\/h3>\n

                            Which protection can detect repeated TCP connection attempts?<\/b><\/p>\n

                              \n
                            1. SYN flood protection<\/span><\/li>\n
                            2. URL filtering<\/span><\/li>\n
                            3. Certificate validation<\/span><\/li>\n
                            4. Address grouping<\/span><\/li>\n<\/ol>\n

                              Correct Answer: 1<\/b><\/p>\n

                              Explanation:<\/b><\/p>\n

                              SYN flood protection is designed to defend against excessive TCP connection-establishment attempts that can consume resources on network devices or servers. During a normal TCP connection, the SYN packet begins the handshake. An attacker can generate large numbers of SYN requests without completing connections, potentially exhausting available session resources. Security-screen protections can detect and mitigate this behavior according to configured thresholds and mechanisms. URL filtering controls website access, certificate validation checks trust credentials, and address grouping organizes network objects. SYN flood protection therefore addresses a specific availability threat involving excessive TCP connection initiation.<\/span><\/p>\n

                              Question 135.<\/b><\/h3>\n

                              What can identify applications using dynamic ports?<\/b><\/p>\n

                                \n
                              1. Static service mapping<\/span><\/li>\n
                              2. Application identification<\/span><\/li>\n
                              3. Route aggregation<\/span><\/li>\n
                              4. Interface monitoring<\/span><\/li>\n<\/ol>\n

                                Correct Answer: 2<\/b><\/p>\n

                                Explanation:<\/b><\/p>\n

                                Application identification can recognize traffic based on application characteristics rather than relying solely on fixed destination-port numbers. This is important because modern applications may use dynamic ports, multiple protocols, or traffic patterns that cannot be reliably classified using simple port matching. Application identification examines supported characteristics to determine the application associated with a session. Static service mapping provides predefined port relationships, route aggregation combines routing information, and interface monitoring observes interface conditions. Application-aware identification therefore enables more precise security policies when application behavior does not correspond to one predictable transport port.<\/span><\/p>\n

                                Question 136.<\/b><\/h3>\n

                                Which logging destination commonly receives SRX event messages?<\/b><\/p>\n

                                  \n
                                1. Security zone<\/span><\/li>\n
                                2. Syslog server<\/span><\/li>\n
                                3. NAT pool<\/span><\/li>\n
                                4. VPN peer<\/span><\/li>\n<\/ol>\n

                                  Correct Answer: 3<\/b><\/p>\n

                                  Explanation:<\/b><\/p>\n

                                  A syslog server can receive event and system messages from an SRX device for centralized collection and analysis. Sending logs to an external syslog destination allows administrators to consolidate information from multiple devices and integrate SRX events with broader monitoring or security-analysis workflows. Security zones organize traffic boundaries, NAT pools provide translation addresses, and VPN peers participate in encrypted communication. Centralized syslog collection is useful when local device storage is insufficient or when operational teams need a unified view of security and system events across the network.<\/span><\/p>\n

                                  Question 137.<\/b><\/h3>\n

                                  Which event mechanism can trigger actions from system conditions?<\/b><\/p>\n

                                    \n
                                  1. Event policy<\/span><\/li>\n
                                  2. Address object<\/span><\/li>\n
                                  3. Application group<\/span><\/li>\n
                                  4. IKE proposal<\/span><\/li>\n<\/ol>\n

                                    Correct Answer: 4<\/b><\/p>\n

                                    Explanation:<\/b><\/p>\n

                                    An event policy can respond to defined system events and trigger configured actions when matching conditions occur. This provides a mechanism for automating responses or operational handling based on events generated by the Junos system. Address objects represent network entities, application groups organize identified applications, and IKE proposals define cryptographic settings for VPN negotiation. Event-driven automation can reduce the need for manual intervention in certain operational scenarios. Administrators should carefully define event conditions and resulting actions so that automated responses align with the intended network and security behavior.<\/span><\/p>\n

                                    Question 138.<\/b><\/h3>\n

                                    Which IDP mode can use signatures to inspect traffic?<\/b><\/p>\n

                                      \n
                                    1. Signature detection<\/span><\/li>\n
                                    2. Route calculation<\/span><\/li>\n
                                    3. Address translation<\/span><\/li>\n
                                    4. DNS caching<\/span><\/li>\n<\/ol>\n

                                      Correct Answer: 1<\/b><\/p>\n

                                      Explanation:<\/b><\/p>\n

                                      Signature detection uses known patterns associated with attacks or suspicious behaviors to inspect traffic. IDP signatures provide predefined detection logic that can identify specific threats when traffic matches the relevant characteristics. This approach differs from routing, address translation, and DNS caching, which address separate networking functions. Signature-based inspection can be especially useful for detecting known attack techniques because the detection logic is designed around recognizable traffic patterns. Administrators can combine signature detection with appropriate IDP policy actions to determine how matching threats should be handled when suspicious traffic is identified.<\/span><\/p>\n

                                      Question 139.<\/b><\/h3>\n

                                      What can show whether a security session was created?<\/b><\/p>\n

                                        \n
                                      1. Route table<\/span><\/li>\n
                                      2. Session table<\/span><\/li>\n
                                      3. DNS cache<\/span><\/li>\n
                                      4. Certificate store<\/span><\/li>\n<\/ol>\n

                                        Correct Answer: 3<\/b><\/p>\n

                                        Explanation:<\/b><\/p>\n

                                        The session table provides information about active or established sessions handled by the SRX device. Administrators can inspect session information to determine whether traffic created a stateful connection and to review relevant attributes such as endpoints, protocols, applications, and session state. The route table shows forwarding information, the DNS cache contains name-resolution data, and the certificate store contains trusted or local certificates. Session-table information is therefore particularly useful when troubleshooting connectivity because it can help determine whether traffic reached the firewall and resulted in the expected stateful session.<\/span><\/p>\n

                                        Question 140.<\/b><\/h3>\n

                                        Which mechanism can prevent excessive connection creation by one source?<\/b><\/p>\n

                                          \n
                                        1. DNS protection<\/span><\/li>\n
                                        2. Application grouping<\/span><\/li>\n
                                        3. Certificate checking<\/span><\/li>\n
                                        4. Session rate limiting<\/span><\/li>\n<\/ol>\n

                                          Correct Answer: 4<\/b><\/p>\n

                                          Explanation:<\/b><\/p>\n

                                          Session rate limiting can restrict how quickly new sessions are created, helping protect firewall resources from excessive connection attempts generated by a particular source or traffic class. Controlling session creation rates can reduce the impact of connection floods and prevent one source from consuming disproportionate processing capacity. DNS protection addresses name-resolution threats, application grouping organizes identified applications, and certificate checking validates certificate-related information. Session rate controls therefore provide a resource-protection mechanism focused on connection establishment rather than content inspection, identity verification, or name-resolution security.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

                                          View Full Juniper JN0-336 Exam Dumps and Practice Test Dumps   Question 121. Which setting determines when a security policy operates? Policy schedule Attack database Tunnel interface Address translation Correct Answer: 1 Explanation: A policy schedule determines the periods during which a security policy is active. This allows administrators to apply different access controls according […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1648,1647],"tags":[],"_links":{"self":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/25112"}],"collection":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/comments?post=25112"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/25112\/revisions"}],"predecessor-version":[{"id":25113,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/25112\/revisions\/25113"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=25112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=25112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=25112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}